If you want corydoras catfish you need sand. Oto's need a well established aquarium with lots of algea, so don't put them in early. i would have a school of 6 corydoras, 3 ottos, and your betta. Instead of otto's you could put in an albino BN pleco.

If you want corydoras catfish you need sand. Oto's need a well established aquarium with lots of algea, so don't put them in early. i would have a school of 6 corydoras, 3 ottos, and your betta. Instead of otto's you could put in an albino BN pleco.

awesome! yeah i knew not to put them in early, i just didnt know whether or not they could go in with corydoras at all hehe.